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Finding the Fourth Proportional to 93,490.61, 140,132.03 and 71,230.59

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Solution

The fourth proportional to 93,490.61, 140,132.03 and 71,230.59 is: 106,766.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,490.61 : 140,132.03 = 71,230.59 : x
  2. Step 2: Convert to fraction form
    93,490.61/140,132.03 = 71,230.59/x
  3. Step 3: Cross multiply
    93,490.61x = 140,132.03 × 71,230.59
  4. Step 4: Simplify right side
    93,490.61x = 9,981,686,818.64
  5. Step 5: Solve for x
    x = 9,981,686,818.64/93,490.61
  6. Step 6: Final answer
    x = 106,766.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.